74LCXH16244G

Overview

The onsemi 74LCXH16244G is a low voltage 16-bit buffer and line driver featuring five-volt tolerant inputs and outputs. It operates within a supply voltage range of 2.3V to 3.6V, providing an output drive capability of ±24mA at VCC = 3.0V. The device incorporates patented noise and EMI reduction circuitry to minimize signal interference. It supports live insertion and withdrawal operations due to its power-down high-impedance state. The component offers nibble control with separate three-state control inputs for each nibble, allowing flexible configuration for full 16-bit operation.

Feature Summary

• Features five-volt tolerant inputs and outputs compatible with mixed voltage systems
• Incorporates patented noise and EMI reduction circuitry for signal integrity
• Supports live insertion and withdrawal via power-down high-impedance state
• Provides nibble-controlled three-state outputs for flexible bus orientation

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmitter/receiver applications

Procurement Notes

Verify the specific suffix 'GX' versus 'G' in ordering codes, as packaging or revision differences may exist between distributors. Confirm RoHS compliance status through official datasheets or material composition documents before procurement. Ensure the source document explicitly identifies the manufacturer as onsemi or Fairchild Semiconductor legacy data if applicable. Check for end-of-life notices or production change notifications that may affect long-term availability.

Selection Notes

Select this component when designing systems requiring 16-bit buffering with mixed 5V and low-voltage logic interfaces. The five-volt tolerance eliminates the need for level shifters in mixed-voltage environments. Consider the ±24mA drive strength for driving moderate capacitive loads on buses. The nibble control feature allows for partial byte operations, which is beneficial for specific memory mapping requirements.

Part Context

This part belongs to the LCX family of low-voltage CMOS logic devices. It serves as a non-inverting buffer designed for high-speed digital applications. The device is functionally similar to other 74LCX series buffers but specifically optimized for 16-bit width and five-volt tolerance. It addresses the industry need for reliable data transmission in systems transitioning between different voltage domains.

Replacement Considerations

Public confirmed substitute part numbers include 74LCX16244G from ON Semiconductor and National Semiconductor 54LCX16244. Verify pinout compatibility and electrical specifications against the original design requirements before substitution.